FUTABA 4PX (01) PDF Document

To use your FUTABA 4PX safely, please observe the following precautions:

Explanation of Symbols:

2.4GHz System Precautions:

– Pay special attention before turning on the system while other cars are running or other airplanes are flying, as the 2.4GHz RC system could potentially affect them.

– Be sure to set the Fail Safe function.

When using the FUTABA 4PX in the “Digital servo” type, always use it under the following conditions:

– Servos: Futaba digital servo (including BLS Series brushless servos).

– Receiver’s battery: Matched to the ratings of the receiver and connected digital servo (dry cell battery cannot be used).

– Transmitter mode: Digital servo type.

Under other conditions, the set will not operate, or the specified performance will not be displayed even if it operates. This may also cause servo trouble. The FSU Fail Safe Unit cannot be used because the system is different; use the fail safe function of the transmitter.

When using analog servos, always switch the FUTABA 4PX servo type to the “Analog servo” mode. The set cannot operate in the “Digital servo” type. Digital servos can also be used in the “Analog servo” type.

– Do not operate outdoors on rainy days, run through puddles, or use when visibility is limited.

– Do not operate in places like near other radio control sites, near people or roads, on ponds with passenger boats, or near high-tension power lines, as interference could cause a loss of control.

– Do not operate the R/C system when you are tired, not feeling well, or under the influence of alcohol or drugs.

– Do not touch the engine, motor, speed control, or any part that generates heat while operating or immediately after use, as these parts can be very hot and cause burns.

– Always perform an operating range check before use. Have a friend hold the model, or secure it, and walk away to check if the servos follow the transmitter controls.

– When making adjustments to the model, do so with the engine not running or the motor disconnected.

Turning on the power switches:

Always check that the throttle trigger on the transmitter is at the neutral position.

1. Turn on the transmitter power switch.

2. Turn on the receiver or speed control power switch.

Turning off the power switches:

Always be sure the engine is not running or the motor is stopped.

1. Turn off the receiver or speed control power switch.

2. Then turn off the transmitter power switch.

If the switches are turned off in the opposite order, the model may unexpectedly run out of control.

Before running, check the fail safe function as follows:

1. Turn on the transmitter and receiver power switches.

2. Wait at least one minute, then turn off the transmitter power switch. The transmitter automatically transfers the fail safe data to the receiver every minute.

3. Check if the fail safe function moves the servos to the preset position when reception fails.

The fail safe function is a safety feature that minimizes damage by moving the servos to a preset position when reception fails. A common setting example is to have the throttle go to idle or brake position.

When using Ni-MH/Li-ion batteries:

– Never plug the charger into an outlet of other than the indicated voltage.

– Never insert or remove the charger with wet hands.

– Do not use the transmitter’s battery (HT5F1700B or FT2F1700BV2) as the receiver’s battery, as its overload protection circuit can shut down power under high current load.

– Always check that your batteries are charged before operating the model.

– To recharge the transmitter battery, use the special charger made for this purpose to avoid overcharging.

– Do not use the dry cell battery box at the transmitter for running (cruising), only for performance checks. The use of a genuine Futaba NiMH or LiFe battery pack is strongly recommended.

– Do not use commercial AA size Ni-MH and Li-ion batteries, as quick charging may damage the battery holder.

– Do not short circuit the battery terminals.

– Do not drop the battery or expose it to strong shocks or vibrations.

– When the model is not being used, always remove or disconnect the battery.

– Always keep the charger disconnected from the outlet when not in use.

– Do not connect the charger when the battery is not connected, as it may damage the transmitter.

Storage Precautions:

– Do not leave the radio system or models within the reach of small children.

– Do not store your R/C system in places that are extremely hot or cold, exposed to direct sunlight, have high humidity, prevalent vibration or dust, or are exposed to steam and condensation.

– If the system will not be used for a long period, remove the batteries from the transmitter and model and store them in a cool, dry place.

– When storing for a long time, store the system with HT5F1700B batteries in a discharged state. Recharge them before the next use.

Disposal Precautions:

– Do not throw Ni-MH/LiFe batteries into a fire or expose them to extreme heat. Do not disassemble or modify a battery pack.

Battery Electrolyte:

– The electrolyte in Ni-MH/Ni-Cd batteries is a strong alkali. If it gets in your eyes, DO NOT RUB. Wash immediately with water and seek medical attention. If it contacts your skin or clothes, wash with water immediately.

The power switch and display switch on the FUTABA 4PX are push switches.

– When the power switch (PWR) is held down, operation starts by transmitting radio waves. The screen will display “T-FHSS, S-FHSS, FASST”.

– When the display switch (DISP) is held down, the transmitter side data can be checked and set without transmitting radio waves. The screen will display “Display”.

– To turn the power off, hold down either the power switch or the display switch. If both switches are pressed simultaneously, the power is turned off quickly.

At T4PX initialization, if the steering wheel, throttle trigger, push switch, edit button, or other operation is not performed within 10 minutes, an audible alarm will sound, and the message “Warning: Auto power off” will appear.

If any operation is performed, the alarm is reset. If the alarm is not reset, the auto power off function will automatically turn off the power after 5 minutes. You can disable this alarm and the auto power off function in the system settings.

If the transmitter battery voltage drops below the usable range, an audible alarm will sound and “Low battery” will be displayed. When a low battery alarm is generated, you should cease operation immediately and retrieve the model. If the battery goes dead while in operation, you will lose control of the model.

The usable range of LiFe and NiMH batteries is different, so the power supply type must be set correctly in the system settings.

Digital Trim Operation (Wheel):

– The trims DT1, DT2, DT3, and DT4 are operated by tilting the corresponding trim lever up/down or left/right. The current trim position is displayed on the LCD screen.

– Each step is indicated by a tone. When the trim exceeds the maximum range, the beep will change.

– To return a trim to its neutral (center) position, press both push button switches for that trim simultaneously for about one second.

Digital Trim Operation (Grip):

– The trims DT5 (Steering D/R) and DT6 (Brake rate) are operated by turning the lever. The current set value is displayed on the screen.

– This operation cannot be performed if the trim/dial lock function is set.

This adjustment decreases the stroke of the brake (back) side of the throttle trigger.

1. Using a 1.5mm hex wrench, adjust the trigger brake (reverse) stroke by turning the screw. The screw moves the throttle trigger stopper.

2. When the screw is turned clockwise, the stroke becomes narrower. Adjust the stroke while watching the screw.

After changing the mechanical stroke, be sure to adjust the scale of the throttle channel accordingly using the “Adjuster Function” and you may also need to adjust the travel of the throttle servo using “Data Setting”.

To change the wheel or trigger spring’s tension:

1. Using a 1.5mm hex wrench, adjust the wheel or trigger spring tension by turning the screw inside the adjusting hole.

2. The spring is set to the weakest tension at the factory.

3. When the adjusting screw is turned clockwise, the spring tension increases.

The adjustment range is up to 7 to 8 turns from the fully tightened (strongest) position. If turned farther than this, the adjusting screw may fall out.

The throttle trigger position can be moved forward and backward.

1. Using a 2.0mm hex wrench, loosen the trigger slide mounting screw by turning it slightly counterclockwise. Be careful not to turn it too much, as the screw may fall out.

2. Adjust the trigger slide position within the marked range.

3. The high point spring can be removed by moving to the fastest position from the grip. If removed, perform throttle side correction using the adjuster function.

4. Retighten the mounting screw loosened in step 1 to fasten the trigger slide.

For 4 AA Size Batteries:

1. Remove the battery cover from the transmitter by sliding it in the direction of the arrow.

2. Remove the used batteries.

3. Load the new AA size batteries, paying close attention to the polarity markings.

4. Slide the battery cover back onto the case.

For Optional Rechargeable Battery:

1. Remove the transmitter battery cover.

2. After removing the dry cell battery box, disconnect the connector.

3. Insert the connector of the new battery and load the new battery into the transmitter.

4. Finish by installing the battery cover. Be careful not to pinch the battery lead wires.

Charging a NiMH Battery (e.g., HT5F1800B):

1. Plug the transmitter cord of the special charger into the charging jack on the rear of the transmitter.

2. Plug the charger into an AC outlet.

3. Check that the charging LED lights.

Charging a LiFe Battery (e.g., FT2F1700BV2):

1. Remove the battery cover.

2. Disconnect the battery from the T4PX.

3. Balance charging cannot be done through the transmitter; you must remove the LiFe battery to do this with its special charger.

The Trim/Dial Lock function prohibits setup and operation by digital trims DT1-DT6 and dial DL1.

Setting the Lock:

– On the initial screen, press the (-) button for about 1 second. A confirmation beep will be generated, and the trim/dial lock display mark will appear on the screen.

Clearing the Lock:

– On the initial screen, press the (-) button again for about 1 second. The trim/dial lock display will disappear from the screen.

The total timer shows the accumulated time from the last reset and does not change when the model changes. To reset it:

1. On the initial screen, hold down the (+) and (-) buttons simultaneously for 1 second.

Handling the Antenna:

– The antenna position can be changed within its moving range but cannot rotate more than 90°. Forcing it will cause damage.

– Do not grasp the transmitter’s antenna during driving, as this may degrade RF transmission quality.

– Do not apply unnecessary force or shock to the antenna.

– A small glitch might occur when the antenna is brought close to servos or ESCs; keep this in mind during setup.

Handling a microSD Card:

– Always insert and remove the microSD card when the transmitter power is off.

– Insert the card with the metal terminals side at the bottom. Push it in until you hear a click.

– To remove, push the card in again and then pull it out.

– Do not subject the microSD card to unreasonable force or shock.

– Do not install or remove the card with the slot facing your face, as it may fly out.

To install the R304SB receiver:

– Do not cut or bundle the receiver antenna wire.

– Do not bend the coaxial cable, as it can cause damage.

– Install the antenna in a high place as shown in the figure and use an antenna tube to protect it.

– Keep the antenna as far away from the motor, ESC, and other noise sources as possible.

– Wrap the receiver in something soft, like foam rubber, to avoid vibration. If there’s a chance of it getting wet, place it in a waterproof bag or balloon.

– For the R304SB-E receiver, the antenna is installed under the top plate. Do not place wiring or other objects on this plate.

– Always use the R304SB/R304SB-E with a power requirement of 4.8V-7.4V (dry cell battery cannot be used).

Before setting up each function, check and set the following items:

1. RF Output & Rx Type Check: Ensure the receiver type displayed on the screen (“T-FHSS”, “S-FHSS”, or “FASST”) matches the receiver you are using.

2. Receiver Type Change & How To Link: If necessary, change the receiver type in the menu and link the transmitter and receiver.

3. Servo Type Check: Check if the servo type setting (“Digital servo” or “Analog servo”) matches the servos used. An analog servo cannot be used with the “Digital servo” setting.

4. Trigger Ratio Check: Ensure the throttle servo travel (e.g., 50:50, 70:30) is set as required by the Trigger mode function.

5. Trims Initial Set-Up: Check the operation of all digital trims (DT1-DT6) and set them to their neutral (center) positions.

For T-FHSS Receivers (e.g., R304SB):

1. Turn on the transmitter power.

2. Navigate to the “Receiver setup” screen from the menu.

3. Bring the transmitter and receiver within 50cm of each other and turn on the receiver power.

4. On the transmitter, move the cursor to “Link” and press the JOG button. A chime will sound, and the T4PX will enter link mode for 20 seconds.

5. During this 20-second period, press the receiver’s tactile switch for at least 2 seconds. The receiver’s LED will blink red and then change to a greenish-red to green steady light. When the T4PX makes a beeping sound and displays “Link with receiver”, the process is complete.

For S-FHSS/FASST Receivers:

1. Bring the transmitter and receiver close to each other (within 20 inches).

2. Turn on the transmitter.

3. Turn on the receiver.

4. Push the tactile switch of the receiver. When the link is complete, the LED in the receiver will change to solid green.

When installing servos in a car, perform function setup in the following order:

1. Initialize all the trims.

2. Set the servo direction of operation using the Reverse function.

3. Set the subtrim and adjust the servo neutral point.

4. Set the trigger travel by adjusting the throttle trigger mechanical ATL to your liking.

5. Set EPA (End Point Adjustment) of each channel and adjust the servo throw (travel).

You can navigate the FUTABA 4PX menus using the Edit Buttons and the JOG button.

– From the HOME screen, use the JOG button (up, down, left, or right) to call the menu screen.

– On the menu screen, move the cursor to select a function using the JOG button.

– Press the JOG button to enter the setup screen for the selected function.

– Use the (+) and (-) buttons to switch between MENU 1 and MENU 2.

– Press the (END) button to return to the previous screen (e.g., from a function screen to the MENU screen, or from the MENU screen to the HOME screen).

With the FUTABA 4PX, frequently used setting items can be registered as up to 10 direct menus for each model memory. The direct menu screens can be displayed by pressing the (DIR) button from any screen.

To Assign a Function to the Direct Menu:

1. Call the direct menu screen by pressing the (DIR) button.

2. Move the cursor using the JOG button to select the location you want to assign a function to.

3. Select the desired function to be assigned using the (+) or (-) button.

4. When assignment is complete, return to the direct menu screen by pressing the (DIR) button.

The FUTABA 4PX offers a wide range of functions. Here is a summary of some key features:

The Telemetry function allows the running status to be displayed at the transmitter. To use it, you must first enable it.

1. In the Receiver Setting menu, select telemetry by using the JOG button.

2. Select the “ON” option by using the (+) or (-) button.

3. When ending, return to the menu screen by pressing the (END) button.

Once enabled, you can view and adjust settings for various telemetry sensors (Receiver Battery, Drive Battery, RPM, Temperature) in the Telemetry Menu.

This special function allows Futaba motor controller (MC) data changes to be set by the T4PX transmitter. It is used by connecting the ESC directly to the transmitter’s communication port.

1. Connect the T4PX and ESC, and connect the battery to the ESC side.

2. Turn power on the transmitter. The “MC link” menu will be displayed.

3. ESC Read: Select “Read” and press the JOG button to read the connected ESC type and current data.

4. Writing to ESC: To change settings, select “Write” and press the JOG button. The setting data will be written to the ESC.

5. Initialization: To restore factory settings, select “Reset” and press the JOG button.

The FUTABA 4PX has several warning displays indicated by audible alarms and messages on the LCD screen:

– Low Battery Alarm: A continuous tone and “Low battery” message indicates the transmitter battery is low. Cease operation immediately.

– Power off forgotten alarm: Tone sounds (7 times) and stops (repeated) if the transmitter is inactive for 10 minutes.

– MIX Warning: An audible alarm and “Warning” message appear if the power is turned on while an idle-up, engine cut, or neutral brake function switch is active.

– System Error: A continuous tone and “System error” message appear if data is lost. Stop using the system and request repair.

– Backup Error: Tone sounds (7 times) and stops (repeated) if data is not transferred normally on power-up. Turn the power off and back on. If it persists, request repair.

– RF Error: Tone sounds (7 times) and stops (repeated) if the RF module does not operate, especially during charging. Turn off the power immediately.